Yes, i'd call that ^ Uber~Angst. But i do not agree that it describes BuffyS6...
Here's Hoping none of us {or our worst enemies..} in real life EVER experience ANY Facsimile of the Post-existential-Pre-Suicidal-Angst as described above. Not even TV characters.
Growing up, however, will always be hard to do.
Plus ça change...